Welcome from the East side of the Valley. I think Injectors are probably a slightly easier transition from carts, but either way, the learning curve isn't all that bad. The main drawback for the Injectors is the blades aren't quite as readily available, and they're a little more expensive than DE blades. As far as soaps, you should take a trip down to Wet Shaving Products. It's down near the Chandler Mall. You can check out quite a few scents before you buy that way. One of our other den members also owns www.retroshaveshop.com where you can find really good Route 66 soaps, though she doesn't have a store front.
Lots of good stuff in Arizona. If you happen to be in the Tucson area, stop in at Razor Emporium and have a chat with Matt. closer to home would be Pheonix Artisan Accoutrements in Casa Grande, though they don't have an actual storefront. Their double open comb razor is a great shaver and one I recommend to people just starting out. http://phoenixartisanaccoutrements.com/products/the-phoenix-dbl-oc-safety-razor Naturally, it is out of stock.
Welcome to the Shave Den. I have a feeling you are going to have lots of fun with this hobby. The great craftsmanship and connection to the past make vintage razors so much fun. The great thing is there are so many to try. Have fun.
Welcome to TSD, a great place to learn and share experiences. Plenty of sound advice above, to which I'd have to add the Gillette Tech razors to the recommendations. Simple razors (they don't have to be complicated to be right) and very forgiving. Don't get discouraged by the occasional setback and practice the technique. Then the ADs will really bite. Regards, Chris
Hello and Welcome. be sure to check out the Freebies section there are a couple of PIF's going on right now that you can sign up for too!